Text Difference Checker

A text difference checker is a tool that compares two pieces of text and highlights the differences between them. It works by analyzing both texts line by line and word by word, then identifying additions (shown in green), deletions (shown in red), and unchanged content. Our tool uses advanced algorithms to provide accurate, real-time comparison results with detailed statistics.

Yes, your privacy is completely protected. Our text difference checker processes all comparisons locally in your browser using JavaScript. No text data is sent to our servers or stored anywhere. Your sensitive documents, code, or personal texts remain completely private and secure on your device.

While our tool can identify similarities between two texts, it's designed for comparing known texts rather than plagiarism detection. It's perfect for comparing your own document versions, checking revisions, or seeing what changed between drafts. For comprehensive plagiarism checking, consider using dedicated plagiarism detection tools.

Our tool works with plain text input through copy-paste functionality. You can compare content from any text file format (TXT, DOC, PDF, HTML, etc.) by simply copying the text and pasting it into the comparison panels. The tool preserves formatting and handles various character encodings effectively.

Our similarity calculation is based on the number of unchanged elements compared to the total elements in both texts. It provides a reliable indicator of how similar your documents are. The percentage accounts for your selected options (like ignoring whitespace or case), giving you contextually relevant accuracy measurements.

Absolutely! Our text difference checker is excellent for comparing code files. It uses a monospace font that preserves indentation and formatting, making it easy to spot changes in your code. It's perfect for reviewing code revisions, debugging, or comparing different versions of scripts and configuration files.

There's no hard limit on text size, but very large documents (over 50,000 characters) may experience slower processing depending on your device's performance. For optimal results with large files, consider comparing them in smaller sections or using the tool on a device with adequate processing power.

The color coding is intuitive: Green highlights indicate text that was added in the modified version, red highlights show text that was removed from the original, and regular black text represents content that remained unchanged. This visual system makes it easy to quickly identify what modifications were made.

Word comparison mode highlights individual word changes within lines, making it perfect for detailed editing and proofreading. Line comparison mode shows entire line differences, which is ideal for comparing documents with structural changes or code files where line-level changes are more meaningful.

Absolutely! Our text difference checker is fully responsive and works seamlessly on all devices including smartphones, tablets, and desktop computers. The interface automatically adapts to your screen size, providing an optimal experience whether you're working on mobile or desktop.